LC-3 · Consumer Risk Bulletins

LrrK Kinematic Consumer Risk Bulletin

# LrrK Kinematic Consumer Risk Bulletin

**LRRK Watch / Open-Source Intelligence** — One current signal across consumer systems that sense, move, and act in homes and yards.

| Field | Value |
| --- | --- |
| Window | 1–31 March 2024 |
| Collection cutoff | 31 March 2024 |
| Platform | Quiet Systems |
| Data label | Open-source intelligence // LRRK analytic product |
| Handling | Public-source material. Image rights require separate verification before publication. |

## Executive read

### BLUF

March’s only class+spine primary is a named-lab robotic-mower test: Stiftung Warentest finds child-limb dummies still meet the blade. No official consumer-robot recall and no named March injury were located.

### Key judgments

1. **[Assessment — High confidence]** Stiftung Warentest’s *test* 4/2024 robotic-mower series, reported 21 March 2024, is a laceration-class lab primary: seven of eight units did not stop for a child-arm dummy; Stiga ran over a crawling-child-foot dummy and was rated *mangelhaft*.
2. **[Assessment — High confidence]** No CPSC, Health Canada, OPSS, or Safety Gate consumer-robot recall dated March 2024 was found.
3. **[Inference — Moderate confidence]** A lab dummy is not a March pediatric case. The sense function that treats a small object as grass remains the residual.

### Analytic labels
- **Fact** — verified reporting or primary record
- **Assessment** — analytic judgment
- **Inference** — reasoned but not directly observed
- **Uncertainty** — unresolved information gap

### Source grades
- **A1** — authoritative primary record / directly confirmed
- **B1–B2** — generally reliable and corroborated
- **C3** — useful but requires caution

---

## 01. Stiftung Warentest — seven of eight robotic mowers do not stop for a child-arm dummy

*Event / publication dates: dpa / n-tv 21 March 2024; test 4/2024*

**Product class.** Robotic lawn mowers

**Verified record — [Fact — B1]** Stiftung Warentest tested eight robotic mowers for 400–700 m² lawns (about €450–€1,590; six boundary-wire, two camera). None received *gut* or *sehr gut*. dpa (21 March 2024): testers used a child-arm dummy; **seven of eight did not stop**. Because that dummy run is not a standards test, six models still scored *ausreichend* on safety; five reached an overall *befriedigend*. Only Einhell Freelexo CAM 500 avoided the arm dummy; it left its mapped area and scored *ausreichend* overall. Yard Force failed standing adult-foot detection. Stiga, the dearest unit, was rated *mangelhaft*: it drove at speed over a crawling-child-foot dummy — testers called that a breach of the European safety standard. Best overall (all 2,6 / *befriedigend*): Husqvarna Automower Aspire R4 (€1,090), Gardena Smart Sileno City (€1,100), Solo by Al-Ko Robolinho 520W (€875). [n-tv / dpa, 21 March 2024](https://www.n-tv.de/ratgeber/Kein-Maehroboter-ueberzeugt-Warentest-article24821062.html); [Mitteldeutsche Zeitung / dpa, 21 March 2024](https://www.mz.de/leben/haus-und-garten/test-kaum-ein-mahroboter-macht-vor-kinderarmen-halt-3810717); issue: [test 4/2024](https://www.test.de/Maehroboter-im-Test-4698387-0/).

**This is a lab test, not a March injury.** No brand-named March pediatric case was found.

**Threat landscape.** A battery rotary cutting means versus a child-shaped limb that is not a standing adult foot. Same class pattern as later May hospital copy (out of this window).

**Forum / community notes.**
- none found.

**Intelligence assessment.** [Assessment — High confidence] The 21 March dpa report and the 4/2024 issue are a March laceration-class primary. [Inference — Moderate confidence] Arm- and crawling-foot dummy failures exist because the obstacle rule still treats small objects as lawn. [Uncertainty] Full brand-level table scores sit behind the paid *test* issue and are not quoted beyond the named units above.

**Opportunity.** A brand-named 2024 pediatric case, or a RAPEX/OPSS alert citing the same dummy geometry.

**LRRK relevance.** Sense / Move / Act — cutting-means versus a child-shaped probe. Lab: dummy geometry. Watch: EN 50636 series and Honda’s later official pages.

**Confidence.** High on the 21 March report and the seven-of-eight / Stiga / Einhell outcomes as stated. Moderate on unpaid table detail. Low on 2024 market uptake of any fix.

---

## Forward indicators

1. Any brand-named pediatric robotic-mower case (Klagenfurt is still ahead).
2. Honda / other official obstacle-sensor actions.
3. Any CPSC or RAPEX robovac fire page.
4. Any iRobot or Neato brick / server-shutdown notice.
5. Any Litter-Robot official file.

> **Collection integrity.** Dictionary audit. One signal added (Warentest laceration lab). The January–February iRobot record is not restated. The 30 March RIF-notification date is a January announcement, not a March primary. **Excluded:** Aiper Elite Pro (August 2023); STIHL iMOW dock (CPSC 16 March **2023**); FirstPower Dyson V6 pack (not a robot). No CPSC/RAPEX robovac fire. No Litter-Robot. No Neato brick. Forum empty. Five-signal form is not padded.

*LRRK — security assurance for systems that sense, move, and act.*

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